Improved sash-fasteners



UNITED STATES PATENT OFFICE.A

GILBERT D.' WHITIVIORE, OF BOSTON, MASSACHUSETTS.

IMPROVED SASH-FASTENERS.

Specification forming partof Letters Patent No. 38,853, dated June 9, 1863.

To all whom it may concern: f

Be it known that I, GILBERT D. WHITMORE, a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Sash-Fastener forVindows of the Rtilway-(Jarriages, and I do hereby declare the same to be fully described in the following specication and represented in the accompanying drawings, of which* Figure 1 denotes a front view of it as applied to a sash and its frame. Fig. 2 is a section of it, taken parallel to the sash.

In the drawings, A denotes a windowsash, and B the frame in which it is to slide. C is a boltcase fastened to the lower part of the sash, and contains a long bolt, D, which is pressed forward by a spring, E, arranged Within the case. The bolt extends through the extremities of the case, and at its rear end is connected with one end of an arm or lever, F, by meansof a chain, G, or its mechanical equivalent. The lever or arm F is furnished with a knob, a, and at its other end turns on a pin or fulcrum, b, within a sectoral boX or case, H. The two sides d @of the case H constitute stops to arrest the motion of the lever F after it may have caused the retraction of the bolt. There are to be two notches, I K in the edge of the frame B, and so situated as to enable the outer end ot' the bolt to enter one of them when the sash may be down to its lowest position, and the other of them when such sash may be up to its highest position. There may be other or intermediate notches between these two should the same be deemed necessary, in order that the sash may be fastened partly open. Pressure made upward on the knob a will move the lever and produce retraction of the bolt from the lower orifice, K, and, if continued, such pressure will, by the force of the lever against the side d of its case, effect the elevation of the sash. If, while the sash is raised, pressure be made downward on the knob a, the bolt may be withdrawn and the sash forced downward. The lever, its case, and the bolt-case are so arranged with respect to the sash as to bring the knob a at or about at the middle of the lower bar of the said sash. This causes pressure when exerted on the knob in order to either elevate or depress the sash to operate to the best advantage.

I lay no claim to the application of a cranked Wheel and a connection-bar to a spring bolt;

nor do I claim the application of a separate lifter to a sash provided with a spring-bolt and a thumb-lever for its retraction.

My invention or improved sash-fastener involves the arrangement and application of the case H and its stops d e with the retractionlever F, connected with the spring-bolt D, as described.

I claim- The improved sash-fastener having its parts arranged and constructed substantially in manner and so as to operate as described.

GILBERT l). WHITMORE.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

